Renovation Contractor in Oshawa & Durham Region
From the newer subdivisions to the established homes along the King Street corridor, Cornerstone builds waterproof, built-to-last bathrooms in Courtice — fixed price, daily cleanup, and a 5-year written warranty.
Local Knowledge
Courtice has grown fast, and most of its homes reflect it — 1990s through 2010s subdivisions filling the area between Oshawa and Bowmanville. Those homes are structurally solid, but the bathrooms were finished to a builder's price point: basic tile, entry-level fixtures, standard vanities, and a builder-grade shower or tub surround that's now dated. They're ideal candidates for an upgrade that adds real comfort and value without touching the bones of the house.
Along the older King Street corridor and the original parts of Courtice, you'll find homes with more age on them — and bathrooms that may need plumbing updates or a smarter layout when they're opened up. Knowing which situation you're in before demo is what keeps a project on budget.
Whichever Courtice home you've got, the engineering underneath is what protects it — and that never changes with budget. Every bathroom we build gets the same Schluter waterproofing system and a mandatory 24-hour flood test before a single tile goes in.
Taking on more than one room? Many Courtice homeowners pair the bathroom with a kitchen renovation in Courtice under one contract and schedule — same crew, same standard, far less disruption than running two projects separately.
Recent Work
Built to the Cornerstone Standard — Schluter waterproofing, 24-hour flood test, and a 5-year written warranty.
The Cornerstone Standard
Whether your Courtice bathroom is a focused refresh or a full ensuite, the structural standard never changes. Here's what goes into every one.
Schluter-KERDI-BOARD in all wet zones and Schluter-DITRA under every tile floor — water physically cannot reach your wall cavities or crack your tile.
Every shower basin is flooded to the brim and held for 24 hours before any tile goes in. If the water drops a millimetre, work stops.
A detailed multi-page proposal with a locked price and a committed schedule — backed by a $300/day penalty if we miss the end date.
Sealed dust containment, HEPA air scrubbers, floor armour, and a 30-minute cleanup every single day. Your home stays livable.
Common Questions
Start with a free bathroom diagnostic. We'll walk your space, assess the scope, and deliver a detailed multi-page proposal with a fixed price before any work begins — built once, built right.
Durham Region's trusted renovation contractor. Led by Mike Brock since 2017. We Listen, We Build, We Deliver.